Have you ever been lying in bed, about to fall fast asleep when your leg jerks suddenly, snapping you awake?
Thousands more Moments of Science on our website: amomentofscience.org
Loading more stuff…
Hmm…it looks like things are taking a while to load. Try again?
TM + © 2014 Vimeo, LLC. All rights reserved.
Made with k in NYC.
Your content preferences apply to any Vimeo videos you view. Learn more about content preferences in our FAQ.